I stumbled onto Willie Mays’ Minor League numbers after that McCovey story led me to baseball-reference. Holy hell. Obviously small-sample size caveats apply, and Triple-A then wasn’t the same as Triple-A now, but, well, yeah. There was good stuff about this in Leo Durocher’s book, about Mays’ adjustment to the big leagues.
Tedquarters
Ted Berg
Tedquarters 
A 1.323 OPS. An Interesting and completely random note to put it in persepctive, that OPS is EXACTLY double the OPS that Jeff Francoeur posted for the Mets in 2010.
I’ve always assumed that AAA was tougher back then — pre-expansion, no rule 5 draft, etc. How was the Durocher book? I bought it for my old man for Father’s Day, and he raved about. Been thinking about getting it for myself.
It was awesome. Read it.
But if Beltran hadn;t been hurt and if Bay had his normal year the Mets could have carried Frenchy’s low OBP. LOL